980
CDUS46 KSEW 250120
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
620 PM PDT THU SEP 24 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 24 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 63 1222 PM 89 1974 69 -6 72
MINIMUM 51 549 AM 38 1948 52 -1 53
AVERAGE 57 60 -3 63
PRECIPITATION (IN)
TODAY 0.00 0.99 1950 0.06 -0.06 0.00
MONTH TO DATE 1.03 1.19 -0.16 0.49
SINCE OCT 1 37.94 38.92 -0.98 29.40
SINCE JAN 1 21.16 22.98 -1.82 16.00
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 8 5 3 2
MONTH TO DATE 82 69 13 24
SINCE SEP 1 82 69 13 24
SINCE JUL 1 107 124 -17 48
COOLING
TODAY 0 0 0 0
MONTH TO DATE 2 30 -28 34
SINCE SEP 1 2 30 -28 34
SINCE JAN 1 267 263 4 328
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 9.8
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 500 AM
LOWEST 59 100 AM
AVERAGE 68
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 85 1991
MINIMUM TEMPERATURE (F) 52 36 1972
SUNRISE AND SUNSET
SEPTEMBER 24 2026.....SUNRISE 659 AM PDT SUNSET 702 PM PDT
SEPTEMBER 25 2026.....SUNRISE 700 AM PDT SUNSET 700 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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